I've been continuing to run since I found out I'm pregnant (I'm 14 weeks now) but have been taking it really easy, going quite a lot slower and making sure I don't get too out of breath. Last night I ran for an hour and felt fine, could talk while running, although did feel quite warm at the end. Today a friend told me you should only run for half an hour otherwise your body will overheat and there won't be enough blood going to the baby, and this has made me really worried! Also my stomach muscles ache today - its definitely muscle ache (a bit like if you've done too many sit ups) rather than period pain type aching.
Am I right in continuing to run or is my friend right in saying I should stop after half an hour? I was reading a thread yesterday where someone who was a personal trainer gave some good advice but I can't find it today!